Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT563

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AP61302

2.4V TO 5.5V INPUT, 3A LOW IQ SYNCHRONOUS BUCK CONVERTER WITH POWER-GOOD

Evaluation Board User Guides

AP61302Z6-EVM-User-Guide.pdf (582 KB)

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Description

The AP61300/AP61302 is a 3A, synchronous buck converter with a wide input voltage range of 2.4V to 5.5V. The device fully integrates a 70mΩ high-side power MOSFET and a 50mΩ low-side power MOSFET to provide high-efficiency, step-down, DC-DC conversion.

The AP61300/AP61302 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.

The device is available in a SOT563 package.

Feature(s)

VIN: 2.4V to 5.5V
Output Voltage (VOUT): 0.6V to 3.6V
3A Continuous Output Current
6V ± 2% Reference Voltage
19μA Low Quiescent Current (Pulse-Frequency Modulation)
2MHz Switching Frequency (VIN = 5V, VOUT = 1.8V)
Up to 84% Efficiency at 5mA Light Load
Programmable Operation Mode Through EN
- Pulse-Frequency Modulation
- Pulse-Width Modulation Regardless of Output Load
Low-Dropout (LDO) Mode
Power-Good Indicator
- AP61302
Protection Circuitry
- Undervoltage Lockout (UVLO)
- VIN Overvoltage Protection (OVP)
- Peak Current Limit
- Valley Current Limit
- Thermal Shutdown
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
An automotive-compliant part is available under separate datasheet (AP61300Q/AP61302Q)

Application(s)

5V distributed power bus supplies
White goods and small home appliances
FPGA, DSP, and ASIC supplies
Network video cameras
Wireless routers
Consumer electronics
General-purpose point-of-load applications

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Standard
Type	Buck
HS RDS(ON) (mΩ)	70
LS RDS(ON) (mΩ)	50
MaximumInput Voltage (V)	5.5
MinimumInput Voltage (V)	2.4
Quiescent Current Typ (μA)	19
Shutdown Current Typ (µA)	0.1
Output Current (A)	3 A
Minimum Output Voltage (V)	0.6
Maximum Output Voltage (V)	VIN
Frequency Typ (kHz)	2200
Features	Enable, Light Load Efficiency, Forced PWM, Power-Good Output Discharge, Soft-start Fixed, UVLO Fixed, VIN OVP, Overcurrent Protection, Thermal Shutdown, Synchronous Rectification

Technical Documents

Evaluation Board User Guides

AP61302Z6-EVM-User-Guide.pdf (582 KB)

Calculators

AP61x0x-Q-Power-Calculation.xlsx (451 KB)

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

RoHSFile

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2674	2024-03-28	2024-06-26	Additional Wafer Source SPFAB
PCN-2605	2023-03-09	2023-06-09	Qualified Additional Cu Pillar Bump Site and Bill of Materials (BOM) Lead Frame Material
PCN-2531	2021-07-30	2022-01-29	Additional Die Revision, Redistribution Layer (RDL), BUMP Sites (SJSEMI and LBS), as well as Assembly/Test (A/T) Site (CAT)